Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753864AbaJQSuV (ORCPT ); Fri, 17 Oct 2014 14:50:21 -0400 Received: from us01smtprelay-2.synopsys.com ([198.182.60.111]:48292 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753298AbaJQSuU convert rfc822-to-8bit (ORCPT ); Fri, 17 Oct 2014 14:50:20 -0400 From: Paul Zimmerman To: Sudip Mukherjee , "balbi@ti.com" , Greg Kroah-Hartman CC: "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH v3 1/2] usb: dwc2: gadget: sparse warning of context imbalance Thread-Topic: [PATCH v3 1/2] usb: dwc2: gadget: sparse warning of context imbalance Thread-Index: AQHP6cUIzDwuGd1Mj0WTmj6cZd6Hnpw0oliA Date: Fri, 17 Oct 2014 18:50:19 +0000 Message-ID: References: <1413521043-7587-1-git-send-email-sudipm.mukherjee@gmail.com> In-Reply-To: <1413521043-7587-1-git-send-email-sudipm.mukherjee@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.9.64.240] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > From: Sudip Mukherjee [mailto:sudipm.mukherjee@gmail.com] > Sent: Thursday, October 16, 2014 9:44 PM > > sparse was giving the following warning: > warning: context imbalance in 's3c_hsotg_ep_enable' > - different lock contexts for basic block > > we were returning ENOMEM while still holding the spinlock. > The sparse warning was fixed by releasing the spinlock before return. > > Signed-off-by: Sudip Mukherjee > --- > drivers/usb/dwc2/gadget.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c > index 7b5856f..7f25527 100644 > --- a/drivers/usb/dwc2/gadget.c > +++ b/drivers/usb/dwc2/gadget.c > @@ -2561,8 +2561,10 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, > hs_ep->fifo_size = val; > break; > } > - if (i == 8) > - return -ENOMEM; > + if (i == 8) { > + ret = -ENOMEM; > + goto error; > + } > } > > /* for non control endpoints, set PID to D0 */ > @@ -2579,6 +2581,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, > /* enable the endpoint interrupt */ > s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); > > +error: > spin_unlock_irqrestore(&hsotg->lock, flags); > return ret; > } Acked-by: Paul Zimmerman -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/